N-Methylaniline-induced Si–Si bond cleavages of perchlorooligosilanes

•Si–Si bond cleavages of perchlorooligosilanes were studied.•N,N-Methylphenylamino-substituted monosilanes were obtained with quantitative yields.•Products and yields depended on the perchlorooligosilanes used.•Disproportionation between Si–N and Si–Cl bonds was observed in products.

This study describes Si–Si bond cleavage of perchlorooligosilane using an amine. N-Methylaniline-induced Si–Si bond cleavage reactions of cyclic perchlorosilanes Si5Cl10 (1) and Si4Cl8 (2), and acyclic perchlorosilanes Si5Cl12 (3) and Si2Cl6 (4) yielded the N,N-methylphenylamino-substituted monosilanes, (NMePh)3−nSiHCln (5; n = 2, 6; n = 1, 7; n = 0) and (NMePh)4-nSiCln (8; n = 2, 9; n = 3). Products and yields depended on the perchlorooligosilanes used. In addition, disproportionation between Si–N and Si–Cl bonds was observed in reactions of compounds 5 and 9.

Graphical abstractN-Methylaniline-induced Si–Si bond cleavages of decachlorocyclopentasilane yielded N,N-methylphenylamino-substituted monosilanes in quantitative yields. Si–N bonds and Si–H bonds were formed in the products and all Si–Si bonds of decachlorocyclopentasilane were cleaved.Figure optionsDownload full-size imageDownload as PowerPoint slide